A targeted technical intervention to combat summer interference and ensure more robust digital terrestrial reception

Rome, July 30, 2025 — As is well known, the gradual rise in temperatures, particularly during the summer, can cause propagation effects that can significantly worsen television signal quality. Rai Way, in collaboration with its parent company Rai, has taken action to address and mitigate disruptions to RAI's digital terrestrial television networks. Initial checks carried out following the interventions are yielding very positive results.

The main actions carried out involved the reconfiguration of MUX-B using DVB-T2 technology, which took place on July 1. In Veneto, Friuli Venezia Giulia, and other neighboring regions, the operations involved 22 transmitting stations. As always, the goal was to ensure better quality radio and television service, particularly during the hottest months of the year.

Following the realignment of signals broadcast to Veneto and Friuli Venezia Giulia, initial measurements taken in the field by Rai Way technical teams confirm encouraging results: most of the coastal area and the majority of inland areas previously affected by interference can now receive RAI1, RAI2, and RAI3 not only on the usual “channels” 1, 2, and 3, but also on channels 501, 502, and 503 with excellent quality.

Channels 501, 502, and 503, carried by MUX-B in DVB-T2 technology, represent a technically more robust alternative that is more resilient to propagation phenomena.

For this reason, users experiencing reception problems are advised to check for channels 501, 502, and 503 in their list and, if necessary, retune their television.

As far as Veneto in particular is concerned, the intervention has produced widespread benefits: from the coastal areas to the foothills of Treviso, Vicenza, and Verona, there has been a clear improvement in signal quality. Some residual critical issues are concentrated only in high-altitude mountain areas, where the morphology of the territory and the presence of multiple interfering signals require further technical analysis, which is currently underway.

The initiative is part of a broader network improvement strategy that has also involved other regions, including Puglia, Calabria, Molise, Lazio, and Lombardy, and is part of a national technological evolution plan aimed at strengthening the resilience of the broadcasting system and offering a better experience to users throughout the country.